... ip modem, gsm modemgprs modem with rs232 rs485 io for m2m meter readinggprs modem(DTU) with I/OF2114 GPRS IP MODEM is ... , ADC, input pulse counter and pulse wave output function. Ideal for M2M fields, smart grid, industrial automation, telemetry, finance, POS, ... )Compliant to GSM phase 2/2+GPRS class 10, class 12(optional)Bandwidth85.6KbpsTX powerGSM850/900: <33dBmGSM1800/1900: <30dBmRX sensitivity<- ...